org.aksw.limes.core.measures.measure.semantic.edgecounting

Class AEdgeCountingSemanticMeasure

java.lang.Object

org.aksw.limes.core.measures.measure.AMeasure

org.aksw.limes.core.measures.measure.semantic.edgecounting.AEdgeCountingSemanticMeasure

All Implemented Interfaces:

IMeasure, IEdgeCountingSemanticMeasure

Direct Known Subclasses:

LCHMeasure, LiMeasure, ShortestPathMeasure, WuPalmerMeasure

public abstract class AEdgeCountingSemanticMeasure
extends AMeasure
implements IEdgeCountingSemanticMeasure

Implements the edge-counting semantic string similarity abstract class.

Version:

1.0

Author:

Kleanthi Georgala (georgala@informatik.uni-leipzig.de)

Field Summary

Fields

Modifier and Type	Field and Description
protected static int	ADJECTIVE_DEPTH
protected static int	ADVERB_DEPTH
protected SemanticDictionary	dictionary
protected AIndex	Indexer
protected static int	NOUN_DEPTH
protected static int	VERB_DEPTH

Constructor Summary

Constructors

Constructor and Description
AEdgeCountingSemanticMeasure(AIndex indexer)

Method Summary

Modifier and Type	Method and Description
double	checkSimilarity(HashMap<String,Double> similaritiesMap, String sourceToken, String targetToken) Checks if a semantic similarity between two tokens has already been calculated.
void	close() Closes and removes the semantic dictionary from memory
int	getHierarchyDepth(int posNumber) Retrieves the hierarchy depth for a given POS.
edu.mit.jwi.item.IIndexWord	getIIndexWord(String str) Retrieves the IIndexWord for a given input string
edu.mit.jwi.item.IWord	getIWord(edu.mit.jwi.item.IWordID wordID) Retrieves a IWord for a given IWordID
ArrayList<ArrayList<edu.mit.jwi.item.ISynsetID>>	getPaths(edu.mit.jwi.item.ISynset synset) Retrieves a list of hypernym paths for a given concept, stored in an index instance.
SemanticDictionary	getSemanticDictionary()
double	getSimilarity(edu.mit.jwi.item.IIndexWord w1, edu.mit.jwi.item.IIndexWord w2) Calculates the semantic similarity between two IIndexWords.
double	getSimilarity(Instance instance1, Instance instance2, String property1, String property2) Returns the similarity between two instances, given their corresponding properties.
double	getSimilarity(edu.mit.jwi.item.ISynset synset1, edu.mit.jwi.item.ISynset synset2) Calculates the semantic similarity between two concepts.
double	getSimilarity(Object object1, Object object2) Returns the similarity between two objects.
edu.mit.jwi.item.ISynset	getSynset(edu.mit.jwi.item.IWord iword) Retrieves an ISynset for a given IWord
List<edu.mit.jwi.item.IWordID>	getWordIDs(edu.mit.jwi.item.IIndexWord w) Retrieves a list of IWordID for a given IIndexWord
void	setDictionary(SemanticDictionary dict)
String[]	tokenize(String[] strings) Tokenizes an array of strings

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.aksw.limes.core.measures.measure.semantic.edgecounting.IEdgeCountingSemanticMeasure

getSimilarityBetweenConcepts

Methods inherited from interface org.aksw.limes.core.measures.measure.IMeasure

getName, getRuntimeApproximation, getType

Field Detail

NOUN_DEPTH

protected static final int NOUN_DEPTH

See Also:

Constant Field Values

VERB_DEPTH

protected static final int VERB_DEPTH

See Also:

Constant Field Values

ADJECTIVE_DEPTH

protected static final int ADJECTIVE_DEPTH

See Also:

Constant Field Values

ADVERB_DEPTH

protected static final int ADVERB_DEPTH

See Also:

Constant Field Values

Indexer

protected AIndex Indexer

dictionary

protected SemanticDictionary dictionary

Constructor Detail

AEdgeCountingSemanticMeasure

public AEdgeCountingSemanticMeasure(AIndex indexer)

Method Detail

getSemanticDictionary

public SemanticDictionary getSemanticDictionary()

setDictionary

public void setDictionary(SemanticDictionary dict)

getHierarchyDepth

public int getHierarchyDepth(int posNumber)

Retrieves the hierarchy depth for a given POS.

Parameters:

posNumber, - the input POS number id

Returns:

the corresponding hierarchy depth

getIWord

public edu.mit.jwi.item.IWord getIWord(edu.mit.jwi.item.IWordID wordID)

Retrieves a IWord for a given IWordID

Parameters:

wordID, - the input IWordID

Returns:

the corresponding IWord

getSynset

public edu.mit.jwi.item.ISynset getSynset(edu.mit.jwi.item.IWord iword)

Retrieves an ISynset for a given IWord

Parameters:

iword, - the input IWord

Returns:

the corresponding ISynset

getWordIDs

public List<edu.mit.jwi.item.IWordID> getWordIDs(edu.mit.jwi.item.IIndexWord w)

Retrieves a list of IWordID for a given IIndexWord

Parameters:

w, - the input IIndexWord

Returns:

the corresponding list of IWordIDs

getPaths

public ArrayList<ArrayList<edu.mit.jwi.item.ISynsetID>> getPaths(edu.mit.jwi.item.ISynset synset)

Retrieves a list of hypernym paths for a given concept, stored in an index instance.

Parameters:

synset, - the input concept

Returns:

the corresponding list of hypernym paths

getSimilarity

public double getSimilarity(edu.mit.jwi.item.ISynset synset1,
                            edu.mit.jwi.item.ISynset synset2)

Calculates the semantic similarity between two concepts.

Parameters:

synset1, - the first input concept

synset2, - the second input concept

Returns:

the actual semantic similarity between synset1 and synset2

getSimilarity

public double getSimilarity(edu.mit.jwi.item.IIndexWord w1,
                            edu.mit.jwi.item.IIndexWord w2)

Calculates the semantic similarity between two IIndexWords.

Parameters:

w1, - the first input IIndexWord

w2, - the second input IIndexWord

Returns:

the actual semantic similarity between w1 and w2

tokenize

public String[] tokenize(String[] strings)

Tokenizes an array of strings

Parameters:

strings, - the input array of strings

Returns:

an array of tokenized strings

checkSimilarity

public double checkSimilarity(HashMap<String,Double> similaritiesMap,
                              String sourceToken,
                              String targetToken)

Checks if a semantic similarity between two tokens has already been calculated.

Parameters:

similaritiesMap, - the map that stores the semantic similarities between two tokens

sourceToken, - the source input token

targetToken, - the target input token

Returns:

the similarity of the tokens, if it exists, or the maximum double value

getSimilarity

public double getSimilarity(Instance instance1,
                            Instance instance2,
                            String property1,
                            String property2)

Description copied from interface: IMeasure

Returns the similarity between two instances, given their corresponding properties.

Specified by:

getSimilarity in interface IMeasure

Returns:

The similarity of the instances

close

public void close()

Closes and removes the semantic dictionary from memory

getSimilarity

public double getSimilarity(Object object1,
                            Object object2)

Description copied from interface: IMeasure

Returns the similarity between two objects.

Specified by:

getSimilarity in interface IMeasure

Returns:

The similarity of the objects

getIIndexWord

public edu.mit.jwi.item.IIndexWord getIIndexWord(String str)

Retrieves the IIndexWord for a given input string

Parameters:

str, - the input string

Returns:

the corresponding IIndexWord